Django formset UpdateView不会让我上传文件

我试图用多个内联formset创建一个UpdateView视图。它工作得很好，因为我可以添加或删除文件和图像，但出于某种原因，它不会接受任何文件/图像。例如，如果我在发布中添加第二个文件并上载文件，它将返回一个form_invalid函数，指出FileField旁边需要此字段。与图像相同的东西 - 我不能添加任何新图像，或者我甚至不能将任何图像更改为另一个文件，因为它会说这个字段是必需的。除此之外，我可以更改所有的出版物字段，也可以更改文件的标题，说明和版本，并且可以正确保存，但是当我添加新的文件/图像或只更改它使用的文件时，不做任何事情，它只会返回一个无效的表单函数。Django formset UpdateView不会让我上传文件

models.py

class Publication(models.Model): 
    title = models.CharField('Tytul', max_length=100) 
    author = models.ForeignKey(User, verbose_name=('Author'), blank=True, default=0) 
    pub_date = models.DateTimeField('Data publikacji', default=datetime.now) 
    mod_date = models.DateTimeField('Data ostatniej modyfikacji', default=datetime.now) 
    description = models.CharField('Opis', max_length=450) 
    slug = models.SlugField(max_length=40, unique=True) 
    category = models.ForeignKey(Category, verbose_name=('Kategoria'), default=0, related_name='publication') 
    video = EmbedVideoField(blank=True) 

class File(models.Model): 
    title = models.CharField('Tytul', max_length=100) 
    version = models.CharField(verbose_name=u"Wersja", max_length=100) 
    author = models.ForeignKey(User, verbose_name=('Author'), blank=True, default=0) 
    pub_date = models.DateTimeField('Data publikacji', default=datetime.now) 
    mod_date = models.DateTimeField('Data ostatniej modyfikacji', default=datetime.now) 
    description = models.CharField('Opis', max_length=450) 
    downloads = models.IntegerField(default=0) 
    physicalfile = models.FileField('Wrzuc plik', upload_to=randomfilenames, validators=[validate_extension]) 
    publicationfk = models.ForeignKey(Publication,on_delete=models.CASCADE, related_name='files') 


class Image(models.Model): 
    publication = models.ForeignKey(Publication, related_name='images') 
    image = VersatileImageField('Wrzuc obrazek')

forms.py

class FileForm(forms.ModelForm): 
    class Meta: 
     model = File 
     fields = ['title', 'version', 'description', 'physicalfile',] 

class ImgForm(forms.ModelForm): 
    class Meta: 
     model = Image 
     fields = ['image',] 

class PublicationForm(forms.ModelForm): 
    class Meta: 
     model = Publication 
     fields = ['title', 'description', 'slug', 'category',] 

fileformset = inlineformset_factory(Publication, File, form=FileForm, exclude=[],can_delete=True, extra=1) 
imageformset = inlineformset_factory(Publication, Image, form=ImgForm, can_delete=True, exclude=[], extra=1)

views.py

class PublicationEdit(UpdateView): 
    model = Publication 
    form_class = PublicationForm 
    template_name = 'mods/pubedit.html' 

    def get_success_url(self): 
     self.success_url = reverse('mods:publicationview', args=(self.object.id,)) 
     return self.success_url 

    def get_context_data(self, **kwargs): 
     context = super(PublicationEdit, self).get_context_data(**kwargs) 
     if self.request.POST: 
      context['pubform'] = PublicationForm(self.request.POST, instance=self.object) 
      context['fileform'] = fileformset(self.request.POST, self.request.FILES, instance=self.object) 
      context['imgform'] = imageformset(self.request.POST, self.request.FILES, instance=self.object) 
     else: 
      context['pubform'] = PublicationForm(instance=self.object) 
      context['fileform'] = fileformset(instance=self.object) 
      context['imgform'] = imageformset(instance=self.object) 
     return context 

    def post(self, request, *args, **kwargs): 
     self.object = self.get_object() 
     form_class = self.get_form_class() 
     pubform = self.get_form(form_class) 
     fileform = fileformset(self.request.POST, self.request.FILES, instance=self.object) 
     imgform = imageformset(self.request.POST, self.request.FILES, instance=self.object) 

     if (pubform.is_valid() and fileform.is_valid() and imgform.is_valid()): 
      return self.form_valid(pubform, fileform, imgform) 
     else: 
      return self.form_invalid(pubform, fileform, imgform) 


    def form_valid(self, pubform, fileform, imgform): 
     self.object = pubform.save() 
     fileform.instance = self.object 
     fileform.save() 
     imgform.instance = self.object 
     imgform.save() 
     return HttpResponseRedirect(self.get_success_url()) 

    def form_invalid(self, pubform, fileform, imgform): 
     return self.render_to_response(self.get_context_data(pubform=pubform, 
            fileform=fileform, 
            imgform=imgform))

来源

2017-04-24 drakerc

你设置窗体的ENCTYPE = “的multipart/form-data的”？ – neverwalkaloner

@neverwalkaloner呃，不，我没有。我完全忘了它。非常感谢你，我花了几个小时试图找出我的代码有什么问题，同时我忘记了这个基本的东西，它现在工作的很好。 – drakerc

不客气。我发表了我的评论作为答案。 – neverwalkaloner

最可能的原因是不设置窗体的enctype属性。如果使用表单来上传你建议立即进行删除设置文件属性enctype像这样：

<form method="post" enctype="multipart/form-data">

来源

2017-04-24 16:35:08 neverwalkaloner

Django formset UpdateView不会让我上传文件

回答

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